You wish to test the following claim (Ha) at a significance level of a = 0.10. H.:µ = 55.4 Ha:µ < 55.4 You believe the population is normally distributed, but you do not know the standard deviation. You obtain the following sample of data: data 19.2 19.2 76 41
You wish to test the following claim (Ha) at a significance level of a = 0.10. H.:µ = 55.4 Ha:µ < 55.4 You believe the population is normally distributed, but you do not know the standard deviation. You obtain the following sample of data: data 19.2 19.2 76 41
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Transcribed Image Text:**Hypothesis Testing Example**
**Objective:**
Test the following claim (\( H_a \)) at a significance level of \( \alpha = 0.10 \).
**Null Hypothesis (\( H_0 \)):**
\( \mu = 55.4 \)
**Alternative Hypothesis (\( H_a \)):**
\( \mu < 55.4 \)
**Sample Information:**
You assume the population is normally distributed but the standard deviation is unknown. You collect the following sample data:
- 19.2
- 19.2
- 76
- 41
**Questions:**
1. **What is the test statistic for this sample?**
- Provide the test statistic accurate to three decimal places.
2. **What is the p-value for this sample?**
- Provide the p-value accurate to four decimal places.
**Decision Criteria:**
- Determine if the p-value is:
- Less than (or equal to) \( \alpha \)
- Greater than \( \alpha \)
**Conclusion:**
Based on the test statistic, make a decision to either:
- Reject the null hypothesis
- Accept the null hypothesis
- Fail to reject the null hypothesis

Transcribed Image Text:As such, the final conclusion is that...
- There is sufficient evidence to warrant rejection of the claim that the population mean is less than 55.4.
- There is not sufficient evidence to warrant rejection of the claim that the population mean is less than 55.4.
- The sample data support the claim that the population mean is less than 55.4.
- There is not sufficient sample evidence to support the claim that the population mean is less than 55.4.
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